PlainZIP

Chelmsford, MA · standard

ZIP Code 01824

Middlesex County, Massachusetts - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

24,911
542/sq mi
$140,050
Median income
$619,700
Median home value
55.6%
Bachelor's or higher

The verdict

Chelmsford pairs a top-decile household income with top-decile home values, in a low-density, homeowner-dominated area.

Top 5%
household income, US ZIPs
Top 8%
home value, US ZIPs
542
people per sq mi
82%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 01824 against every reporting US ZIP.

ZIP code 01824 is a densely settled ZIP (a standard USPS delivery area) in Chelmsford, Middlesex County, Massachusetts, with 24,911 residents across 46.0 square miles, a density of 542 people per square mile, in the New York time zone.

ZIP 01824 skews affluent, with a median household income of $140,050 (21% above the Massachusetts average), while per-capita income is $62,155. Local economic indicators show a 5.4% poverty rate alongside 6.5% unemployment. On housing, the median home value is $619,700 (3% above the state average) with median rent at $2,167 per month, and 82.3% of occupied units are owner-occupied.

This is a highly-educated ZIP: 55.6% of adults hold a bachelor's degree or higher, the median age is 41.8, and the average commute is 28 minutes. A geography-based comparison follows: 10 ZIP codes within about 10 miles of 01824, plus 6 more within Middlesex County, give a clearer read than the national average alone.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Top industries in ZIP 01824

Top 5 sectors by establishment count in Chelmsford, MA

Which industries have the most business establishments in ZIP 01824.

establishments

What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.

Source U.S. Census Bureau · ZIP Code Business Patterns (ZBP) As of 2023

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 01824, Chelmsford, MA · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

24,911

Population

46.0

Area (sq mi)

542

People / sq mi

New York

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 01824?

41.8

Median Age

48.1%

Male

51.9%

Female

13.7%

Foreign-Born

White 78.3%
African American 1.9%
Asian 10.8%
American Indian or Alaska Native 0.3%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 6.3%
Hispanic or Latino 5.8%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$140,050

Median Household Income

+21% vs state

$62,155

Per Capita Income

5.4%

Poverty Rate

6.5%

Unemployment Rate

28.0 min

Mean Commute Time

How ZIP 01824 ranks nationally

Chelmsford, MA household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$140,050 Top 5% higher than 95% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). Below this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Below this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Below this entry. $140,000–$160,000: 686 US ZIPs (2%). This entry sits in this band. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 71.5%
Bachelor's Degree or Higher 55.6%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

10,327

Total Housing Units

9,877

Occupied Units

450

Vacant Units

2.68

Avg Household Size

Occupancy Type

Owner 82.3%
Renter 17.7%

$619,700

Median Home Value

+3% vs state

$2,167

Median Rent

1967

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How have home values changed over time?

FHFA House Price Index, annual appreciation data based on repeat sales and appraisals

+5.6%

YoY Change (2024)

256

HPI Index (2000 = 100)

+156%

Total Change Since 2000

Home values in ZIP 01824 have increased 5.6% over the past year (2024). Since 2000, this ZIP has seen +156% cumulative appreciation.

Year Annual Change HPI Index
2020 +3.3% 178
2021 +12.1% 199
2022 +11.4% 222
2023 +9.3% 243
2024 +5.6% 256

Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.

What businesses operate in this ZIP?

Census Bureau data shows 844 business establishments in ZIP 01824, employing approximately 20,094 people with a combined annual payroll of $1,440,267,000.

844

Businesses

20,094

Employees

$1.4B

Annual Payroll

17

Industry Sectors

Industry Establishments % of Total
Health care and social assistance 133 15.8%
Professional, scientific, and technical services 116 13.7%
Construction 104 12.3%
Other services (except public administration) 79 9.4%
Retail trade 77 9.1%
Accommodation and food services 71 8.4%
Manufacturing 57 6.8%
Administrative and support and waste management and remediation services 47 5.6%
Finance and insurance 38 4.5%
Wholesale trade 30 3.5%
Transportation and warehousing 21 2.5%
Real estate and rental and leasing 21 2.5%
Educational services 15 1.8%
Information 14 1.7%
Arts, entertainment, and recreation 14 1.7%
Management of companies and enterprises 3 0.4%
Industries not classified 3 0.4%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 01824 vs 01851 →

ZIP 01824 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 01824 ranks #5 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 01824 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 01824 ranks #6 of 9 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
01851 Lowell, MA 30,190 2.8 mi
01741 Carlisle, MA 4,852 4.2 mi
01854 Lowell, MA 27,606 4.0 mi
01863 North Chelmsford, MA 8,891 3.4 mi
01862 North Billerica, MA 10,227 3.4 mi
01886 Westford, MA 21,951 4.3 mi
01852 Lowell, MA 33,508 4.2 mi
01850 Lowell, MA 15,237 5.2 mi
01742 Concord, MA 17,726 8.9 mi
01821 Billerica, MA 30,310 6.0 mi

More ZIP Codes in Middlesex County

02148 standard
Malden, MA
Pop: 59,503
02155 standard
Medford, MA
Pop: 57,964
02149 standard
Everett, MA
Pop: 41,550
01801 standard
Woburn, MA
Pop: 38,903
01752 standard
Marlborough, MA
Pop: 38,499
01702 standard
Framingham, MA
Pop: 37,206

Related Areas

Middlesex County Chelmsford, MA Massachusetts

Frequently Asked Questions

What county is ZIP code 01824 in? ▼
ZIP code 01824 (Chelmsford) is located in Middlesex County, Massachusetts. Middlesex County contains multiple ZIP codes, see the full list at /counties/middlesex-ma.
What is the population of ZIP code 01824? ▼
ZIP code 01824 in Chelmsford, MA has a population of 24,911 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 01824? ▼
The median household income in ZIP 01824 is $140,050, which is 84% above the national average of $76,288.
What is the average home value in ZIP 01824? ▼
The median home value in ZIP 01824 is $619,700, which is 123% above the national average of $278,155.
What is the demographic makeup of ZIP 01824? ▼
The largest racial group in ZIP 01824 is White at 78.3%. Hispanic or Latino residents make up 5.8% of the population.
How many businesses are in ZIP code 01824? ▼
ZIP code 01824 has 844 business establishments employing approximately 20,094 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 01824? ▼
The top industries by establishment count in ZIP 01824 are: Health care and social assistance (133), Professional, scientific, and technical services (116), Construction (104). There are 17 industry sectors represented in total.
How have home values changed in ZIP code 01824? ▼
According to the FHFA House Price Index, home values in ZIP 01824 increased by 5.6% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 156%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.
What is the education level in ZIP code 01824? ▼
In ZIP code 01824, 71.5% of residents aged 25+ have a high school diploma or higher, and 55.6% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 01824? ▼
The mean commute time for workers in ZIP code 01824 is 28.0 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend more time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 01824? ▼
In ZIP code 01824, approximately 82.3% of occupied housing units are owner-occupied and 17.7% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 01824? ▼
The poverty rate in ZIP code 01824 is 5.4% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.